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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2008-01-25 15:08:27 -0500
committerIngo Molnar <mingo@elte.hu>2008-01-25 15:08:27 -0500
commit78f2c7db6068fd6ef75b8c120f04a388848eacb5 (patch)
tree994e8082a01c78e691bacb90c0f8368823c87767 /include/asm-generic
parentfa717060f1ab7eb6570f2fb49136f838fc9195a9 (diff)
sched: SCHED_FIFO/SCHED_RR watchdog timer
Introduce a new rlimit that allows the user to set a runtime timeout on real-time tasks their slice. Once this limit is exceeded the task will receive SIGXCPU. So it measures runtime since the last sleep. Input and ideas by Thomas Gleixner and Lennart Poettering. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> CC: Lennart Poettering <mzxreary@0pointer.de> CC: Michael Kerrisk <mtk.manpages@googlemail.com> CC: Ulrich Drepper <drepper@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-generic')
-rw-r--r--include/asm-generic/resource.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/include/asm-generic/resource.h b/include/asm-generic/resource.h
index a4a22cc35898..587566f95f6c 100644
--- a/include/asm-generic/resource.h
+++ b/include/asm-generic/resource.h
@@ -44,8 +44,8 @@
44#define RLIMIT_NICE 13 /* max nice prio allowed to raise to 44#define RLIMIT_NICE 13 /* max nice prio allowed to raise to
45 0-39 for nice level 19 .. -20 */ 45 0-39 for nice level 19 .. -20 */
46#define RLIMIT_RTPRIO 14 /* maximum realtime priority */ 46#define RLIMIT_RTPRIO 14 /* maximum realtime priority */
47 47#define RLIMIT_RTTIME 15 /* timeout for RT tasks in us */
48#define RLIM_NLIMITS 15 48#define RLIM_NLIMITS 16
49 49
50/* 50/*
51 * SuS says limits have to be unsigned. 51 * SuS says limits have to be unsigned.
@@ -86,6 +86,7 @@
86 [RLIMIT_MSGQUEUE] = { MQ_BYTES_MAX, MQ_BYTES_MAX }, \ 86 [RLIMIT_MSGQUEUE] = { MQ_BYTES_MAX, MQ_BYTES_MAX }, \
87 [RLIMIT_NICE] = { 0, 0 }, \ 87 [RLIMIT_NICE] = { 0, 0 }, \
88 [RLIMIT_RTPRIO] = { 0, 0 }, \ 88 [RLIMIT_RTPRIO] = { 0, 0 }, \
89 [RLIMIT_RTTIME] = { RLIM_INFINITY, RLIM_INFINITY }, \
89} 90}
90 91
91#endif /* __KERNEL__ */ 92#endif /* __KERNEL__ */